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diff --git a/service/src/pixelated/adapter/services/draft_service.py b/service/src/pixelated/adapter/services/draft_service.py
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+#
+# Copyright (c) 2014 ThoughtWorks, Inc.
+#
+# Pixelated is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pixelated is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+from twisted.internet import defer
+
+
+class DraftService(object):
+ __slots__ = '_mail_store'
+
+ def __init__(self, mail_store):
+ self._mail_store = mail_store
+
+ @defer.inlineCallbacks
+ def create_draft(self, input_mail):
+ mail = yield self._mail_store.add_mail('DRAFTS', input_mail.raw)
+ defer.returnValue(mail)
+
+ @defer.inlineCallbacks
+ def update_draft(self, ident, input_mail):
+ removed = yield self._mail_store.delete_mail(ident)
+ if removed:
+ new_draft = yield self.create_draft(input_mail)
+ defer.returnValue(new_draft)
+
+ def process_draft(self, ident, input_mail):
+ if ident:
+ return self.update_draft(ident, input_mail)
+ return self.create_draft(input_mail)